You can still use roots or rocks as a berm or jump on a 29er if you want to. You just don't HAVE to.
Absolutely what he said!
Full suss or not I still bunny hop over rocks and roots so just having a 29 full suss doesnt have to make any difference to this.
A full suss for me feels perfect and that I am actually sat on the bike not perched above it - at 6ft 2, a 19" frame was the perfect size.
I would say though you cannot make this decision on 26 v 29 without testing a few to make your own mind up.
Oh yeah dont believe what you hear about 29 not be as focused, you cant be as technical etc - its just nonsense.
Whatever you do - hope you enjoy the riding